Ah, stats, my main concern with Rolemaster.
I don't like the idea of separating stats from DPs, although I'd be happy if there were different stats involved in providing DPs (and maybe emphasise Memory and Reasoning plus make Intuition a development stat in place of Agility); I'd prefer the game power variable to be reflected in a multiplier.
Oh, and I still want Empathy gone and I remain unhappy about Presence being the power stat for mentalism (I'd prefer Reasoning or Self Discipline).
For spells, I like the current system; scalable is also good in principle, but I'm not sure that it's Rolemaster (in the same way that I think that D&D 4e isn't really D&D). It sounds like the suggested system and the current system are too different for both to be there as options, however, in core (I guess you could release one in an alternate Spell Law, but that's creating a huge divide between the two sub-games).